Rtsp server stream resolution

[valerik931]

How to change this value manually?
I use gstreamer in Android.
Pipeline at server side:
appsrc name=mysrc is-live=true max-bytes=0 do-timestamp=true min-latency=0 ! queue ! h264parse name=parse ! queue ! rtph264pay name=pay0 pt=96 timestamp-offset=0

Pipeline at client side:
rtspsrc location=rtsp://192.168.30.59:8554/test latency=50 ! rtpjitterbuffer latency=50 ! rtph264depay ! video/x-h264,framerate=60/1 ! h264parse ! avdec_h264 ! autovideosink

And I got stream with 1280x720 resolution, how I can manage signals to server and stream resolution?

Thank you!

[Matteo Valdina]

Hi,

On the server pipeline I'll add:

rtph264 config-interval=-1...

This value will embed picture format when there is a key frame.

The resution should be controlled by the appsrc. This is an encoded stream so you cannot rescale.

Best

Matteo

On Aug 7, 2017 05:57, "valerik931" <[hidden email]> wrote:

How to change this value manually?
I use gstreamer in Android.
Pipeline at server side:
appsrc name=mysrc is-live=true max-bytes=0 do-timestamp=true min-latency=0 !
queue ! h264parse name=parse ! queue ! rtph264pay name=pay0 pt=96
timestamp-offset=0
Pipeline at client side:
rtspsrc location=rtsp://192.168.30.59:8554/test latency=50 ! rtpjitterbuffer
latency=50 ! rtph264depay ! video/x-h264,framerate=60/1 ! h264parse !
avdec_h264 ! autovideosink
And I got stream with 1280x720 resolution, how I can manage signals to
server and stream resolution?

Thank you!



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[valerik931]

I think you writed about rtph264pay, but setting this to -1 didn't help.

On media-configure signal invocation I changed appsrc settings to this:
GstCaps* caps = gst_caps_new_simple("video/x-h264",
                                        "stream-format",G_TYPE_STRING,"byte-stream",
                                        "width", G_TYPE_INT, videoWidth,
                                        "height", G_TYPE_INT, videoHeight,
                                        "framerate", GST_TYPE_FRACTION, 60, 1,
                                        "profile", G_TYPE_STRING, "baseline",
                                        NULL);

    g_object_set(G_OBJECT(data->appsrc),
                 "stream-type", GST_APP_STREAM_TYPE_STREAM,
                 "format", GST_FORMAT_BYTES,
                 "caps", caps,
                 NULL);

videoWidth and videoHeight are 1080 and 1920 respectively. but stream is steel 1280x720.

[Matteo Valdina]

Hi,

If the stream 1280x720 you need to change the source (what generate the stream for appsrc) or you need to upscale the stream.

Upscaling the stream means that you need to decode, scale and re-encode the stream. This without any quality advantages because your original stream was a 720p.

Something like this:

appsrc ! vaapih264dec ! vaapipostproc ! video/x-raw,width=1920,height=1080 ! vaapih264enc ! h264parse ! rtph264pay ...

But this is overkill ...
It is better that you investigate how to increase the quality of the source.

Best

Matteo

On Mon, Aug 7, 2017 at 11:07 AM, valerik931 <[hidden email]> wrote:

I think you writed about rtph264pay, but setting this to -1 didn't help.

On media-configure signal invocation I changed appsrc settings to this:
GstCaps* caps = gst_caps_new_simple("video/x-h264",

"stream-format",G_TYPE_STRING,"byte-stream",
                                        "width", G_TYPE_INT, videoWidth,
                                        "height", G_TYPE_INT, videoHeight,
                                        "framerate", GST_TYPE_FRACTION, 60,
1,
                                        "profile", G_TYPE_STRING,
"baseline",
                                        NULL);

    g_object_set(G_OBJECT(data->appsrc),
                 "stream-type", GST_APP_STREAM_TYPE_STREAM,
                 "format", GST_FORMAT_BYTES,
                 "caps", caps,
                 NULL);

videoWidth and videoHeight are 1080 and 1920 respectively. but stream is
steel 1280x720.




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